Improvement in spring-balances



UNITED 'STATES PATENT OFFICE,

IrAsON BURNHAM, OF NORWALK, OHIO.

IMPROVEMENT IN SPRING-BALANCES.l

Specification forming part of Letters Patent No. 35,869, dated July l5, 1802.

To all whom, it may concern.-

Be it known that I, Nason BURNHAM, of Norwalk, in the county of Huron and State of Ohio, have invented a new and improved article of manufacture in the shape of an Improved SpringB-alance, an article which may also be, used as a pressure-indicator on steam-boilers; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

The accompanying drawings represent my improved spring-balance as being combined with the dome of a steam-boiler for the purpose of being used as a pressuregage, Figure l being a side View, and Fig. 2 a section ofthe same. r

Myimproved spring-balance is composed of a casing, A B C, a graduated rod, d, a volute employed snbstantialiy in the manner herein set forth. l

The above specification of my improved steam-pressure gage or spring weighing-balance signed and witnessed this 17th day of February, 1862. NASON BURNHAM. Witnesses:

LOUIs D. STRUTTON, T. R. STRONG. 

